Narcotics Agent Risa, an undercover investigator operating within a government agency as an unofficial operative. Amid a sudden surge of suspicious deaths, Risa uncovers evidence linking the deaths of young women to a dangerous pleasure drug. She infiltrates a clinic suspected of manufacturing the substance, assuming the role of a nurse—only to fall into the clinic director's trap. Subjected to brutal pleasure punishment involving electric shocks, vibrators, triple electric stimulators, and mind-altering drugs that dominate her body and mind, Risa now faces her next harrowing trial.